⟩ What is Brouter in network engineering?
Hybrid devices that combine the features of both bridges and routers.
Hybrid devices that combine the features of both bridges and routers.
Solvent used for dewaxing of petroleum products are A. furfural B. methyl ethyl ketone (MEK) C. propane D. both(b)&(c)
The pressure (kg/cm2 ) and temperature (°C) maintained in electrical desalters for crude oil are respectively A. 10 and 120 B. 1 and 200 C. 50 and 250 D. 10 and 300
Deoiling of wax is done by its A. heating B. cooling C. solvent extraction D. both(b)&(c)
The average boiling point of aviation turbine fuel is closest to that of A. lubricating oils B. LPG C. diesel D. Kerosene
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C. A. 50 B. 70 C. 90 D. 140
The most widely used crude topping column in refineries is the __________ column. A. bubble-cap B. packed bed C. fluidised bed D. perforated plate
Molecular weight of crude petroleum may be around A. 50 B. 250 C. 1500 D. 5000
Electrical desalting of crude oil removes the __________ impurities. A. oleophilic B. oleophobic C. both (a) and (b) D. neither (a) nor (b)
Mercaptans is represented as (where R and R' are alkyl groups) A. R-COOH B. R-S-H C. R-S-R D. R-S-R'
An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating. A. 5 B. 15 C. 40 D. 60